check for SSU packet size

10 years ago · 38b901484a
parent c8a80a497d
commit 38b901484a
1 changed files with 5 additions and 0 deletions
--- a/SSUData.cpp
+++ b/SSUData.cpp
@ -148,6 +148,11 @@ namespace transport
 			bool isLast = fragmentInfo & 0x010000; // bit 16	
 			uint8_t fragmentNum = fragmentInfo >> 17; // bits 23 - 17
 			LogPrint (eLogDebug, "SSU data fragment ", (int)fragmentNum, " of message ", msgID, " size=", (int)fragmentSize, isLast ? " last" : " non-last"); 		
+			if (fragmentSize >= SSU_V4_MAX_PACKET_SIZE)
+			{
+				LogPrint (eLogError, "Fragment size ", fragmentSize, "exceeds max SSU packet size");
+				return;
+			}

 			//  find message with msgID
 			I2NPMessage * msg = nullptr;